Bending device and bending method for tabs of aluminum shell battery

Abstract

The invention discloses a bending device and a bending method for tabs of an aluminum shell battery. The bending device comprises a battery shell body 1, to-be-put-into-shell core tabs A, to-be-put-into-shell core tabs B, a cover body, a welding head and a welding seat, the to-be-put-into-shell core tabs B are uniformly arranged at the put-into-shell edge of the battery shell body; the to-be-put-into-shell core tabs A are spread in a gradient mode from top to bottom in the extending direction; the to-be-put-into-shell core tabs B and the to-be-put-into-shell core tabs A are asymmetrically arranged and welded, and pressing heads are arranged above the the to-be-put-into-shell core tabs A; and before bending, the pressing heads are pressed downwards to enable the left half parts of the to-be-put-into-shell core tabs A to be in a gradient bending state. According to the invention, the problem that traditional tabs are easy to droop after being bent is solved, and the rate of defective products generated by bending is reduced; the safety risk is reduced, the product quality is improved, and the product percent of pass is increased by about 2%; a subsequent X-ray full-inspection process in the process flow of coating films and putting into the shell is reduced, the production cost is reduced, and meanwhile, the human input is saved by 8 persons per line; and the capacity is effectively released and is increased by 30%.

Description

technical field [0001] The invention relates to the field of assembling tabs of aluminum shell batteries, in particular to a bending device and a bending method for tabs of aluminum shell batteries. Background technique [0002] The negative electrode lug assembled into the shell in the square aluminum shell battery is folded S or Z shape, and its function is to avoid the risk of short circuit caused by the contact between the negative electrode tab and the aluminum shell due to vibration in the later stage of production, transportation, and use. [0003] The current assembly bending process such as figure 1 As shown, before welding and bending, the tabs on both sides of the welding center line are evenly distributed, and the tabs are overturned from one side with a jackknife. The bent outwardly bent tab has a shorter bending path, and the tab It is tedious, and it is easy to have the phenomenon of sagging tabs. This phenomenon is a great safety hazard. It is necessary to a...

AI Technical Summary

Problems solved by technology

[0003] The current assembly bending process such as figure 1 As shown, before welding and bending, the tabs on both sides of the welding center line are evenly distributed, and the tabs are overturned from one side with a jackknife. The bent outwardly bent tab has a shorter bending path, and the tab It is lengthy, and it is easy to have the phenomenon of sagging tabs. This phenomenon is a great safety hazard. It is necessary to add an X-ray full inspection process to pick out after the encapsulation and shelling process, which increases the manufacturing cost.

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